This is the Windsor Balsa Stripper, ideal for the Scratch Builder! Features Engineered to accurately cut balsa sheets up to 1/4" thick into strips up to 1/2" wide. This design has a lead screw with 32 threads per inch so that each turn of the wheel will move the blade 1/32 of an inch. The cutting depth is also adjustable by micro-increments. Blade is replaceable. This stripper can be set up for left or right handed use.